Method for quickly forming barrier lake diaphragm walls

Abstract

The invention discloses a method for quickly forming barrier lake diaphragm walls. The method comprises the following steps: with axes of the barrier lake diaphragm walls as reference, groove holes are formed through drilling and hole cleaning, and then, multiple casting guide pipes are put down into the groove holes; each of the multiple casting guide pipes is in butt joint with corresponding concrete casting equipment; and the concrete casting quantity of each concrete casting equipment is controlled according to the levelness of concrete casting surfaces cast by the multiple casting guide pipes, so that the concrete casting surfaces cast by the casting guide pipes in butt joint with the concrete casting equipment are synchronously ascended, and the consistency or the levelness is maintained.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a method for rapidly forming an anti-seepage wall of a dam body. Background technique [0002] The barrier body was formed by earthquake collapse and landslides. Since the improvement of the barrier lake is imminent, the improvement of the barrier body needs to adhere to the working idea of ​​research, design, and treatment at the same time. It is necessary to carry out the implementation of risk reduction and flood control projects such as barrier body improvement as soon as possible. The damming body improvement is to carry out anti-seepage treatment and partial slope surface improvement on the damming body, weir foundation and bank slopes on both sides. The anti-seepage treatment of the damming body adopts the combination of anti-seepage wall and curtain grouting. [0003] For the damming body, previous engineering experience mainly focused on disman...

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Problems solved by technology

[0003] For the damming body, previous engineering experience mainly focused on dismantling and diverting water flow. However, for a damming body with a huge volume formed by a super-large collapse, the cost of demolition is very high, and it is difficult to find it near the project site. There are so many accumulations in a suitable site, so if we can make full use of the dams and directly use the dams to form the dam, it will eliminate harm and bring benefits, and turn waste into treasure.

However, for the geology of the dam body where the maximum depth of the cut-off wall exceeds 130m, the thickness of the wall exceeds 1.0m, and the boulder content exceeds 50%, the maximum particle size of the boulder exceeds 15 meters, the overhead phenomenon is serious, and the stratum has not been deposited and cemented. In terms of conditions, these unfavorable conditions have caused great difficulties in the construction of cut-off walls and posed great challenges to existing construction technologies. How to make the geological conditions of the above-mentioned dam body suitable for the construction of cut-off walls? There is no construction precedent at home and abroad

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